s=0.389 and the unbiasing constant for a subgroup of size 3 is c4=0.8862. The long term Z Bench LT is 0.19 0.67 0.84 1.15 1.19 2.01 0.81 2.19 2) The short term ZBench STis 0.84 2.66 1.15 2.01 0.93 1.46 2.32 0.87 s=0.389 and the unbiasing constant for a subgroup of size 3 is c4=0.8862. The long term Z Bench LT is 0.19 0.67 0.84 1.15 1.19 2.01 0.81 2.19 2) The short term ZBench STis 0.84 2.66 1.15 2.01 0.93 1.46 2.32 0.87